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Science Our Environment Class 10 MCQ and Assertion Questions

10 Question MCQ (including Assertion) · Class 10 · Science · CBSE

Preparing for CBSE

Chapter 13 Class 10 - Our Environment | 10 questions | about 8 minutes

Practise Our Environment Class 10 with Teachoo's 10 Question MCQ (including Assertion) (Class 10 · Science · CBSE). Practise these questions in a free interactive quiz with answer feedback.

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Question 1 of 10
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Question 1 of 10
Assertion: Greater number of individuals are present in lower trophic levels.
Reason: The flow of energy is unidirectional.
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Question 2 of 10
NCERT Exemplar
Select the mismatched pair in the following and correct it.
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Question 3 of 10
In the given food chain, suppose the amount of energy at fourth trophic level is 5 kJ , what will be the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
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Question 4 of 10
NCERT Exemplar
Which one of the following green house gases is a contributor due to incomplete combustion of coal and petroleum?
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Question 5 of 10
Assertion (A): The concentration of harmful chemicals is more in human beings.
Reason (R): Man is at the apex of the food chain.
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Question 6 of 10
Assertion (A): CFCs deplete the ozone layer.
Reason (R): CFCs are used as refrigerants and in fire extinguishers.
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Question 7 of 10
NCERT Exemplar
Excessive exposure of humans to UV-rays results in
(i) damage to immune system.
(ii) damage to lungs.
(iii) skin cancer.
(iv) peptic ulcers.
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Question 8 of 10
Assertion: Food chain is responsible for the entry of harmful chemicals in our bodies.
Reason: The length and complexity of food chains vary greatly.
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Question 9 of 10
NCERT Exemplar
Organisms of a higher trophic level which feed on several types of organisms belonging to a lower trophic level constitute the \(\_\_\_\_\).
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Question 10 of 10
Assertion (A): Decomposers keep the environment clean.
Reason (R): They recycle matter by breaking down the organic remains and waste products of plants and animals.
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Frequently asked questions

Who is this Our Environment Class 10 quiz for?

This 10 Question MCQ (including Assertion) covers Our Environment Class 10 for Class 10 · Science · CBSE. Practise the questions in the interactive quiz and check your answers.

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